<!doctype html>
<html>

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width,initial-scale=1">
  <base href="/">
</head>

<body>
  <style>
    .ajax-main {
      height: 100%;
    }
  </style>
  <div class="ajax-main" id="main"></div>
</body>

</html>